We made it through the last ice-age with only our brains and some pointy sticks!
If, indeed the global climate is changing - SO WHAT? I think we'll adjust.
I was a true-blue member of greenpeace from 1974 - 1995.
But they and other enironmental fellow-travellers, increasingly let politics and polemic replace scientific evidence. Also any hardships that had to be borne always seemed to have to apply to somebody else and not them.
This is a long debate so I'll leave it for another day and leave you with this:
As any chemist or bio-chemist knows CO2 is not some lethal toxic agent, but the one of best natural fertilizers around. Oxygen is far more toxic.
An increase of 2% CO2 would be virtually inconsequential. An increase of 2-3% O would be catastrophic.
I know my chemistry. It took me 3 goes to pass the course!